d - 20 mm

Fw - 25 mm

D - 37 mm

B - 18 mm

C - 17 mm

r min. - 0,3 mm

da min. - 22 mm

da max - 24 mm

Da max. - 35 mm

Weight - 0,0395 Kg

Basic dynamic load rating (C) - 18 kN

Basic static load rating (C0) - 13,1 kN

Limiting speed - 7 500 r/min

• Model Number: NA 4903U
• Inner Diameter：20mm Outer Diameter：37mm Width：18mm
• Type：Needle Roller Bearings
• Update date：2025-12-16
• Application:instrumentation instrument,suction nozzle,filter paper products,vacuum filter,Broadcasting System,Hydraulic Hose,Safety protection,wall materials,Industrial Adhesive,gas turbine,Dental Drill etc
• Similar models:ISO RNA4903-2RS NTN NA4903R KOYO NA4903 IKO NA4903UU CRAFT NA4903 SKF RNA4903RS JNS RNA4903 NTN RNA4903R JNS NA4903 AST RNA4903
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903U products，there is large inventory of IKO NA 4903U . We has been built up long-term cooperation with IKO company, could make a bulk order of the NA 4903U Which IKO NA4903U is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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  AB44083S01	26	58	15	SNR	Deep Groove Ball Bearings
  G1202KRRB	53,975	100	55,56	Timken	Deep Groove Ball Bearings
  HC6206DDh	30	62	17	KBC	Deep Groove Ball Bearings
  K 9x12x10 TN	9	12		NBS	Needle Roller Bearings
  K40X45X21CH	40	45		Timken	Needle Roller Bearings
  NA4856	280	350	69	CX	Needle Roller Bearings
  NA49/22	22	39	17	ISO	Needle Roller Bearings
  RNAO17X25X13	17	25	13	INA	Needle Roller Bearings
  RUS212	73,500	110,000	22,000	NTN	Cylindrical Roller Bearings
  S7003 CE/P4A	17	35	10	SKF	Angular Contact Ball Bearings
  361206R	30	72	16	SKF	YOKE TYPE TRACK ROLLERS
  NBC6306	2.5000	3.0000	.2500	NSK	DEEP GROOVE BALL BEARINGS
  61956M	280	380	46	SKF	DEEP GROOVE BALL BEARINGS
  FLRA1ZZA	.0550	.1875	.1094	NTN	DEEP GROOVE BALL BEARINGS
  F-673	3	6	2	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  QJ-228	140	250	42	CONSOLIDATED	ANGULAR CONTACT BALL BEARINGS WITH SPLIT INNER RACE
  NU-3019	95	145	37	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS